Added SignalVisualizer plugin

addons/SignalVisualizer/Visualizer/signal_graph_node.gd

@@ -0,0 +1,94 @@
+@tool
+class_name SignalGraphNode extends GraphNode
+
+# Properties
+# |===================================|
+# |===================================|
+# |===================================|
+
+var connections: Array = [] :
+	get: return connections
+	set(new_value):
+		connections = new_value
+
+# Lifecycle
+# |===================================|
+# |===================================|
+# |===================================|
+
+func _ready():
+	selectable = true
+	resizable = true
+	draggable = true
+
+# Signals
+# |===================================|
+# |===================================|
+# |===================================|
+
+func _on_resize_request(new_minsize):
+	size = new_minsize
+
+# Methods
+# |===================================|
+# |===================================|
+# |===================================|
+
+func has_source_signal_description(signal_name: String, destination_node_name: String) -> bool:
+	for child in get_children():
+		if child.name == "source_" + signal_name + "_" + destination_node_name:
+			return true
+	
+	return false
+
+func get_source_slot(signal_name: String, destination_node_name: String) -> int:
+	var index = 0
+	for child in get_children():
+		if child.name == "source_" + signal_name + "_" + destination_node_name:
+			return index
+
+		index += 1
+
+	return -1
+
+func get_next_source_slot(signal_name: String, destination_node_name: String) -> int:
+	var index = 0
+	for child in get_children():
+		if child.name.begins_with("source_"):
+			if child.name == "source_" + signal_name + "_" + destination_node_name:
+				return index
+
+			index += 1
+
+	return -1
+
+func has_destination_signal_description(signal_name: String, method_signature: String) -> bool:
+	for child in get_children():
+		if child.name == "destination_" + signal_name + "_" + _sanitize_method_signature(method_signature):
+			return true
+	
+	return false
+
+func get_destination_slot(signal_name: String, method_signature: String) -> int:
+	var index = 0
+	for child in get_children():
+		if child.name == "destination_" + signal_name + "_" + _sanitize_method_signature(method_signature):
+			return index
+
+		index += 1
+
+	return -1
+
+func get_next_destination_slot(signal_name: String, method_signature: String) -> int:
+	var index = 0
+	for child in get_children():
+		if child.name.begins_with("destination_"):
+			if child.name == "destination_" + signal_name + "_" + _sanitize_method_signature(method_signature):
+				return index
+
+			index += 1
+
+	return -1
+
+func _sanitize_method_signature(signature: String) -> String:
+	return signature.replace("::", "__")